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Photoluminescence in wide band gap nanocrystals
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SYSNO ASEP 0540846 Document Type A - Abstract R&D Document Type O - Ostatní Title Photoluminescence in wide band gap nanocrystals Author(s) Dragounová, Kateřina (FZU-D) ORCID
Ižák, Tibor (FZU-D) RID
Potocký, Štěpán (FZU-D) RID, ORCID
Potůček, Zdeněk (FZU-D) RID, ORCID
Bryknar, Z. (CZ)
Kromka, Alexander (FZU-D) RID, ORCID, SAI
Remeš, Zdeněk (FZU-D) RID, ORCIDNumber of authors 7 Source Title Proceedings of Abstracts. - Ostrava : Tanger Ltd., 2018 / Shrbená J. - ISBN 978-80-87294-85-7
S. 67-67Number of pages 1 s. Publication form Online - E Action NANOCON 2018 -International Conference on Nanomaterials - Research and Application /10./ Event date 17.10.2018 - 19.10.2018 VEvent location Brno Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords pholuminescence ; diamond Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects GC16-10429J GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 Annotation The diamond films were grown by microwave plasma enhanced CVD system. Temperature dependent steady-state photoluminescence (PL) of Si-V centres was measured within the range 11-300 K. PL measurements are correlated with process parameters. It was found that quartz or Si as substrates and substrate temperature of 800°C were the optimal parameters, at which the highest photoluminescence activity of Si-V centre was measured. For all the samples, the temperature dependent PL measurements exhibited the blue shift in zero-phonon line (ZPL) position for lower temperatures and for selected samples, ZPL narrowing were observed. This effect will be discussed from point of temperature behaviour of Si-V electronic transition energy. Temperature development of PL integral intensity was discussed by means of Boltzmann activation process. It suggests the contribution of other centres in luminescence process.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2021
Number of the records: 1